Electric alarm for cloth-finishing machines.



Nb. 701,248. Patented may 27, I902.

A J. F. ammo.

ELECTRIC ALARM FDR CLOTH FINISHING MACHINES.

7 (Application filed Aug. 6, 1901.) v(No Model.) 2 Sheets-8heet I Io.70l,248. Patented May 27, I902. J. F. BANNUN.

ELECTRIC ALARM FOR CLOTH FINISHIHG MACHINES.

(Application filed Aug. 6, 1901.) (No Model)- 2 Sheets-Shoot 2.

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John E. 3 common UNITED STATES PATENT OFFICE.

JOHN "F. BANNON, or CENTRAL FALLS, nnonn ISLAND.

ELECTRIC ALARM FOR CLOTH-FINISHING MACHINES.

SPECIFICATION forming part of Letters .Patent N 0. 701,248, dated May2'7, 1902.

Application filed August 6. 1901. Serial No- 71,057. (No model.)

T0 at whom it may concern:

Be it known that I, JOHN F. BANNON, a citizen of the United States ofAmerica, whose address is 32 Bagley street, in the city of CentralFalls, county of Providence, and State of Rhode Island, have inventedcertain new and useful Improvements in Electric Alarms forCloth-Finishing Machines, of which the following is a specification.

My invention relates to an electrical device adapted to be secured uponand extend be tween the end frames of a machine which finishes cloth.

In the class of machines employed for finishing cloth it occasionallyhappens that a small particle of metal, such as a pin from the garmentof the operator, will fall upon the fabric and be carried around thecylinder, with the result that the fabric is made torn or mutilated, andthus causing great loss to the manufacturers.

The object I have in view is to provide a device electrically actuatedby a battery and having an alarm to indicate when any such small pieceof metal is carried by the cylinder of the machine.

My invention consists of a comb having a series of blades adapted tocontact with the periphery of the bowl-cylinder of the machine andprovided with electrical connection to an alarm for indicating thedisarrangement of the fabric, whereby the disadvantages above referredto are to a great extent eliminated.

The nature and general characteristic features of my invention will befully understood from the following description, taken in connectionwith the accompanying drawings, forming a part thereof, in which- Figure1 represents a transverse sectional elevation of a machine for finishingcloth and showing the relative position of my attachment thereon. Fig. 2is a front elevation of my attachment as secured in position foroperating upon the bowl-cylinder of the machine. Fig. 3 is a partial topplan view of the comb. Fig. 4: is a central longitudinal sectional Viewof the comb as mounted upon brackets secured to the end frames of themachine. Fig. 5 is a side elevation of the bracket and comb. Fig. 6 is aperspective view of one of the blades of the comb.

Similar characters of reference indicate similar parts in the differentviews of the drawings.

A indicates the comb as a whole, adapted to extend longitudinally withwhat is commonly called the bowl B and having its ends rigidly securedupon suitable brackets G C, which are bolted upon the outer face of theend frames D D of the machine, as shown in Fig. 2. In referring to Fig.4 this comb comprises a metallic supporting-bar a, of a rectangularshape in cross-section, extending upwardly near each extremity, so as toform shoulders I) Z), which abut the inner faces of the brackets, thenceextending outwardly and over the flanges c c of the brackets, as at Ctat.

c is a hard-rubber strip extending between the shoulders f f of the bara, and this strip has its outer face flush with the outer faces of theextensions a a of the bar a, and this rubber strip is provided with aseries of equispaced grooves g g, extending transversely through and atan angle from either edge of its outer face, as shown in Figs. 3 and 4:.

h 7L represent thin metallic blades, each of which has a narrow portioni (see Fig. 6) to fit into each of the grooves of the strip 6 and withan outwardly-projecting portion i, made somewhat wider than the portion2', so as to form shoulders i which abut the edge of the rubber strip 6,and these blades have each end of their narrow portion upwardly bent, asat '0. 8

j is a hard-rubber strip which extends the 5 full length of the metallicbar a, and each of the rubber strips is drilled at divers points in itslength between two of the blades to re ceive screws 70 70, which enterthreaded open-- o ings made in the bar (1,, thus securing each and allof the blades firmly in position.

In the construction of the comb A an even number of pairs of blades areused, forming multiples, each blade of which are connected 5 togetheralternately by short wires Z Z having their ends soldered or otherwisesecured upon the upwardly-bent portions i thus forming a negative andpositive pole connection between the blades. This comb is designed toI00 extend longitudinally with the bowl B of the machine, as seen inFig. 2, having each end secured upon the flanges c c of the brackets bybolts 0 c, and each of the end frames D D of the machine is drilled toreceive clamping-bolts 0 0 which project through an elongated slot 0formed in each of the brackets, for the purpose of adjusting the outerportions i of the blades to contact with the periphery of the bowl B.This bowl is constructed of non-conductor material. hen the comb asdescribed is mounted upon the machine, a wire at is made secure upon thefirst blade or positive pole 1 (see Figs. 2 and 3) and its opposite endsecured in the binding-post of an electric battery E, and from the otherbinding-post of the battery a wire m leads to one of the binding-postsof a magnetic alarm F, and a wire m connects with the oppositebinding-post of the alarm and leads therefrom to the second blade ornegative pole 2, and thus completing the circuit.

Referring to Fig. 1, we will assume that a pin or other small piece ofmetal has fallen upon the fabricn-say at a point 0. The bowl B as itrevolves in the arrow direction will carry the said piece of metalbetween the peripheries of the bowl and the metal cylinder M, whichcylinder will embed the said piece of metal into the bowl, which isconstructed of pulp or othersuitable non-conductor material, and witheach revolution of the bowl the embedded piece of metal will come incontact with the blades 72. h of the comb, thereby forming an electricconnection whereby the alarm is given for the operator to stop themachine from running. The blades of the comb extend at an angle parallelto each other in the series, as shown in Figs. 2 and 3, so that theplane of rotation of the bowl will carry the piece of metal upon a pairof blades having a negative and positive pole connection with thebattery. In Fig. 1 I show two of my devices as applied to the two bowlsof the machine, so that in case the piece of stray metal would not leavethe cloth to be embedded in the lower bowl it would be forced by theupper metal cylinder into the upper bowl.

My device is applicable to all machines which have the usual bowls madeof non-conductormaterial, and any number of combs can be readilyattached to the same. It frequently happens in this class of machinesthat a tack, pin, or other small piece of metal drops upon the cloth andgets embedded in the bowl. Before the machine can be stopped the clothis made ragged or torn and if the cloth is of an expensive materialresults in a great loss. With my device I obviate this diffieulty to agreat extent, for as soon as the stray particle of metal contacts withthe blades at that moment the operator will be notified by the bell,

and at each revolution of the embedded metal the bell will continue toring until the machine is stopped by the operator.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. In a cloth-finishing machine having one or more bowls made ofnon-conductor material, the combination, of a comb adapted to extendlongitudinally with one of said bowls, said comb comprising a metallicsupportingbar, two rubber strips secured upon said bar, one of saidstrips provided with a series of grooves'extending through at an anglefrom either edge thereof, a series of thin metallic blades securedwithin the grooves of said strip and projecting outwardly therefrom, awire having its ends attached to each alternate blade of said comb so asto form multiples having positive and negative pole connections, analarm, a battery having one pole wired to one of the pole connections,and its other pole wired to said alarm and thence to the other poleconnection, substantially as shown and described.

2. In a cloth-finishing machine having one or more bowls made ofnon-conductor mate rial, the combination, of a metallic bar adapted toextend between the end frames of the machine, two strips made ofnon-conductor material secured upon said bar, a series of metallicblades secured between said strips and projecting at an angle therefrom,a wire connected to each alternate blade, a battery, a wire from saidbattery to a positive pole of said blade, an alarm actuated by saidbattery, a wire from said alarm to a negative pole of said blades, withbrackets secured to the end frames of the machine adapted to support theblades and provided with means of adjustment to contact the projectingends of the blades upon the periphery of the bowl, substantially asshown and described.

3. In a cloth-iinishing machine having one or more bowls made ofnon-conductor material, the combination, of a comb provided with aseries of blades, a wire connecting each alternate blade of said series,a battery wired to one of said blades, an alarm actuated by said batteryand wired to the next adjoining blade, each of said blades projecting atan angle to the plane of rotation of the bowl, so arranged that a pieceof metal caught in the surface of the bowl will make a positive andnegative pole connection upon the blades, as set forth.

Signed by me at Providence, Rhode Island, this 5th day of August, 1001.

JOHN l llANNON.

\Vitnesses:

WM. G. HOPKINS, EDWARD WALKER.

ICC

